Multi-body helmet construction with shield mounting

ABSTRACT

A helmet can comprise an upper-body and a lower-body nested within the upper-body. An opening can be formed within a front portion of the helmet and disposed between an outer surface of the upper-body and an inner surface of the lower-body. A first magnet can be encased within the upper-body or the lower-body and adjacent the opening. A shield can comprise a shield mount and a second magnet coupled to the shield mount that is sized to fit within the opening and to be releasably coupled to the first magnet. The first magnet and the second magnet can be self-aligned in direct alignment with eyes of a user. A third magnet can be disposed above the first magnet and aligned with the second magnet on an outer surface of the helmet out of sight from eyes of the user.

RELATED APPLICATIONS

This application is a continuation-in-part of U.S. patent applicationSer. No. 14/640,178 filed Mar. 6, 2015, entitled “MULTI-BODY HELMETCONSTRUCTION WITH SHEILD MOUNTING” to Jacobsen, now issued as U.S. Pat.No. 9,833,032, and also claims the benefit of U.S. provisional patentapplication 61/949,924, filed Mar. 7, 2014 titled “Multi-Body HelmetConstruction and Strap Attachment Method,” the entirety of thedisclosures of which are incorporated by this reference.

TECHNICAL FIELD

This disclosure relates to a helmet comprising multi-body helmetconstruction with shield mounting, such as sunglasses. The multi-bodyhelmet and shield can be employed wherever a conventional helmet andshielding is used with additional benefits as described herein.

BACKGROUND

Protective headgear and helmets have been used in a wide variety ofapplications and across a number of industries including sports,athletics, construction, mining, military defense, and others, toprevent damage to a user's head and brain. Damage and injury to a usercan be prevented or reduced by helmets that prevent hard objects orsharp objects from directly contacting the user's head. Damage andinjury to a user can also be prevented or reduced by helmets thatabsorb, distribute, or otherwise manage energy of an impact.

For helmet-wearing athletes in many applications, such as sports, beyondthe safety aspects of the protective helmet, additional considerationscan include helmet fit and airflow through the helmet. Improvements infit comfort and airflow can reduce distractions to the athlete andthereby improve performance. Thus, helmet design and construction canrelate to use safety, as well as to improvements in fit, airflow, andcomfort for a user without reducing or compromising safety.

In some instances, a user can desire eye protection in addition to thehead protection provided by a helmet. As such, a user will at times weara shield, eye-shield, safety glasses, or sunglasses at a same time ahelmet is worn for head protection. At times, attachment or couplingmechanisms for the helmet and the eye shield can interfere with eachother, or can be uncomfortable, bulky, or cumbersome, which isundesirable for a user.

SUMMARY

A need exists for providing both a helmet for head protection and eyeprotection to a user that is not uncomfortable, bulky, or cumbersome.Accordingly, in an aspect, a helmet can comprise an upper-bodycomprising an upper outer shell and an upper energy-absorbing materialcoupled the upper outer shell. The helmet can comprise a lower-bodycomprising an lower outer shell and a lower energy-absorbing materialcoupled the outer shell, wherein the lower-body is nested within theupper-body. The helmet can comprise an opening formed within a frontportion of the helmet and disposed between an outer surface of theupper-body and an inner surface of the lower-body. The helmet cancomprise a first magnet encased within the upper energy-absorbingmaterial or the lower energy-absorbing material and adjacent theopening. The helmet can comprise a shield comprising a shield mount anda second magnet coupled to the shield mount that is sized to fit withinthe opening and to be releasably coupled to the first magnet.

The helmet can further comprise the first magnet disposed between theouter surface of the upper-body and the opening or between the innersurface of the lower-body and the opening. The first magnet can comprisea surface that is substantially coplanar with a surface of the opening.The upper-energy absorbing material can comprise expanded polypropylene(EPP), expanded polystyrene (EPS), expanded polyurethane (EPU), orexpanded polyolefin (EPO), and the lower-energy absorbing materialcomprises EPP, EPS, EPU, or EPO. The upper-energy absorbing material cancomprise a density in a range of 70-100 g/L, and the lower-energyabsorbing material can comprise a density in a range of 50-80 g/L. Thefirst magnet and the second magnet can be self-aligned with respect toeach other such that the shield can be magnetically coupled to theupper-body or the lower-body in direct alignment with eyes of a user. Athird magnet can be encased within the upper-body or the lower-bodyabove the first magnet, and the second magnet and the third magnet canbe aligned such that the shield can be magnetically coupled to an outersurface of the helmet out of sight from eyes of the user.

In another aspect, a helmet can comprise an upper-body, a lower-bodynested within the upper-body, and an opening formed within a frontportion of the helmet and disposed between the upper-body and thelower-body. A first magnet can be disposed within the upper-body or thelower-body and adjacent the opening. A shield can comprise a shieldmount and a second magnet coupled to the shield mount that is sized tofit within the opening and to be releasably coupled to the first magnet.

The helmet can further comprise the first magnet being disposed betweenan outer surface of the upper-body and the opening or between an innersurface of the lower-body and the opening. The first magnet can comprisea surface that is substantially coplanar with a surface of the opening.The upper-body can comprise an upper energy-absorbing materialcomprising EPP, EPS, EPU, or EPO, and the lower-body can comprise alower energy-absorbing material comprising EPP, EPS, EPU, or EPO. Theupper-energy absorbing material can comprise a density in a range of70-100 g/L, and the lower-energy absorbing material can comprise adensity in a range of 50-80 g/L. The first magnet and the second magnetcan be self-aligned with respect to each other such that the shield canbe magnetically coupled within the opening in direct alignment with eyesof a user. A third magnet can be disposed within the upper-body or thelower-body and above the first magnet, and the second magnet and thethird magnet can be aligned such that the shield can be magneticallycoupled to an outer surface of the helmet out of sight from the eyes ofthe user.

In another aspect, a method of using the helmet can comprise anupper-body, a lower-body nested within the upper-body, an opening formedbetween the upper-body and the lower-body, and a shield comprising ashield mount that is sized to be releasably fit within the opening.

The method of using the helmet can further comprise the shield beingmagnetically coupled within the opening. A first magnet can be disposedbetween an outer surface of the upper-body and the opening or between aninner surface of the lower-body and the opening, and a second magnet canbe coupled to the shield mount. The upper-body can comprise an upperenergy-absorbing material comprising EPP, EPS, EPU, or EPO; and thelower-body can comprise a lower energy-absorbing material comprisingEPP, EPS, EPU, or EPO. A first magnet can be disposed within theupper-body or the lower-body. A second magnet can be coupled to theshield mount so that the first magnet and the second magnet areself-aligned with respect to each other for the shield to bemagnetically coupled within the opening in direct alignment with eyes ofa user. A third magnet can be disposed above the first magnet, and thesecond magnet and the third magnet can be aligned such that the shieldcan be magnetically coupled to an outer surface of the helmet out ofsight from the eyes of the user.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a side view of an embodiment of a multi-body helmetcomprising a shield.

FIG. 2 shows an exploded perspective view of an upper-body, lower-body,and shield of a multi-body helmet.

FIG. 3 shows a close-up view of releasably couplable shield aligned withan opening within a multi-body helmet.

FIG. 4 shows a front profile view of a shield coupled to a multi-bodyhelmet in a rider position.

FIG. 5 shows a front profile view of a shield coupled to a multi-bodyhelmet in a visor position.

FIG. 6 shows a front profile view of a shield coupled to a multi-bodyhelmet in a storage position.

FIG. 7 shows another instance of an exploded perspective view of anupper-body, lower-body, and shield of a multi-body helmet.

DETAILED DESCRIPTION

This disclosure, its aspects and implementations, are not limited to thespecific helmet or material types, or other system component examples,or methods disclosed herein. Many additional components, manufacturingand assembly procedures known in the art consistent with helmetmanufacture are contemplated for use with particular implementationsfrom this disclosure. Accordingly, for example, although particularimplementations are disclosed, such implementations and implementingcomponents may comprise any components, models, types, materials,versions, quantities, and/or the like as is known in the art for suchsystems and implementing components, consistent with the intendedoperation.

The word “exemplary,” “example,” or various forms thereof are usedherein to mean serving as an example, instance, or illustration. Anyaspect or design described herein as “exemplary” or as an “example” isnot necessarily to be construed as preferred or advantageous over otheraspects or designs. Furthermore, examples are provided solely forpurposes of clarity and understanding and are not meant to limit orrestrict the disclosed subject matter or relevant portions of thisdisclosure in any manner. It is to be appreciated that a myriad ofadditional or alternate examples of varying scope could have beenpresented, but have been omitted for purposes of brevity.

While this disclosure includes a number of embodiments in many differentforms, there is shown in the drawings and will herein be described indetail, particular embodiments with the understanding that the presentdisclosure is to be considered as an exemplification of the principlesof the disclosed methods and systems, and is not intended to limit thebroad aspect of the disclosed concepts to the embodiments illustrated.

This disclosure provides a device, apparatus, system, and method forproviding a protective helmet that can include an outer shell and aninner energy-absorbing layer, such as foam. The protective helmet can bea bike helmet used for mountain biking or road cycling, as well as beused for a skier, skater, hockey player, snowboarder, or other snow orwater athlete, a football player, baseball player, lacrosse player, poloplayer, climber, auto racer, motorcycle rider, motocross racer, skydiver or any other athlete in a sport. Other industries also useprotective headwear, such that individuals employed in other industriesand work such as construction workers, soldiers, fire fighters, pilots,or types of work and activities can also use or be in need of a safetyhelmet, where similar technologies and methods can also be applied. Eachof the above listed sports, occupations, or activities can use a helmetthat includes either single or multi-impact rated protective materialbase that is typically, though not always, covered on the outside by adecorative cover and includes comfort material on at least portions ofthe inside, usually in the form of comfort padding.

Generally, protective helmets, such as the protective helmets listedabove, can comprise an outer shell and in inner energy-absorbingmaterial. For convenience, protective helmets can be generallyclassified as either in-molded helmets or hard shell helmets. In-moldedhelmets can comprise one layer, or more than one layer, including a thinouter shell, an energy-absorbing layer or impact liner, and a comfortliner or fit liner. Hard-shell helmets can comprise a hard outer shell,an impact liner, and a comfort liner. The hard outer shell can be formedby injection molding and can include Acrylonitrile-Butadiene-Styrene(ABS) plastics or other similar or suitable material. The outer shellfor hard-shell helmets is typically made hard enough to resist impactsand punctures, and to meet the related safety testing standards, whilebeing flexible enough to deform slightly during impacts to absorb energythrough deformation, thereby contributing to energy management.Hard-shell helmets can be used as skate bucket helmets, motorcyclehelmets, snow and water sports helmets, football helmets, battinghelmets, catcher's helmets, hockey helmets, and can be used for BMXriding and racing. While various aspects and implementations presentedin the disclosure focus on embodiments comprising in-molded helmets, thedisclosure also relates and applies to hard-shell helmets.

FIG. 1 shows a side profile view of a non-limiting example of amulti-body helmet 30 that comprises vents or openings 31 and anupper-body 40 and a lower-body 50. For convenience, the multi-bodyhelmet 30 is referred to throughout the application as a two-bodyhelmet, or bifurcated helmet, comprising the upper-body 40 and alower-body 50, or first and second bodies or portions. However, thepresent disclosure encompasses multi-body helmets that comprise morethan two bodies, such as three, four, or any suitable number of bodies,and use of the term two-body helmet or a bifurcated helmet is intendedto encompass helmets with two or more bodies. The upper-body 40 and thelower-body 50 can be joined to form a single multi-body helmet 30, asshown in FIG. 1, which is a departure from the conventional single bodyhelmets described generally above. FIG. 1 shows the upper-body 40 andthe lower-body 50 of the multi-body helmet 30 adjacent, aligned, and incontact with each other.

The upper-body 40 can comprise an outer shell 42 and an energy-absorbinglayer or impact liner 44, although the upper-body 40 need not have both.For example, in some embodiments the upper-body 40 can comprise theenergy-absorbing layer 44 without the outer shell 42. Vents or openings41 can be formed in the upper-body 40 that form, comprise, or align withat least a portion of the vents 31. Similarly, the lower-body 50 cancomprise an outer shell 52 and an energy-absorbing layer or impact liner54, although the lower-body 50 need not have both. For example, in someembodiments the lower-body 50 can comprise the energy-absorbing layer 54without the outer shell 52. Vents or openings 51 can be formed in thelower-body 50 that form, comprise, or align with at least a portion ofthe vents 31, vents 41, or both.

The outer shells 42 and 52 can each, without limitation, be formed of aplastic, resin, fiber, or other suitable material includingpolycarbonate (PC), polyethylene terephthalate (PET), acrylonitrilebutadiene styrene (ABS), polyethylene (PE), polyvinyl chloride (PVC),vinyl nitrile (VN), fiberglass, carbon fiber, or other similar material.The outer shells 42 and 52 can be stamped, in-molded, injection molded,vacuum formed, or formed by another suitable process. Outer shells 42and 52 can provide a shell into which the energy-absorbing layers 44 and54, respectively, can be in-molded. Outer shells 42 and 52 can alsoprovide a smooth aerodynamic finish, a decorative finish, or both, forimproved performance, improved aesthetics, or both. As a non-limitingexample, the outer shells 42 and 52 can comprise PC shells that arein-molded in the form of a vacuum formed sheet, or are attached to theenergy-absorbing layers 44 and 54, respectively, with an adhesive. Theouter shells 42 and 52 can also be permanently or releasably coupled tothe energy-absorbing layers 44 and 54, respectively, using any suitablechemical or mechanical fastener or attachment device or substanceincluding without limitation, an adhesive, permanent adhesive, pressuresensitive adhesive (PSA), foam-core adhesive, tape, two-sided tape,mounting foam adhesive, fastener, clip, cleat, cutout, tab, snap, rivet,hog ring, or hook and loop fasteners.

In some embodiments, the outer shells 42 and 52 can be formed on, orcover, an entirety of the energy-absorbing layers 44 and 54,respectively. Alternatively, the outer shells 42 and 52 can be formedon, or cover, a portion of the energy-absorbing layers 44 and 54 that isless than an entirety of the energy-absorbing layers 44 and 54,respectively. As a non-limiting example, in some embodiments the outershell 52 can be limited to a lower portion of the lower-body 50 thatwill not be covered or will remain exposed with respect to outer shell42 of upper-body 40. As such, the upper portion of the lower-body 50 canbe formed without outer shell 52.

The energy-absorbing layers 44 and 54 can each be disposed inside, andadjacent, the outer shells 42 and 52, respectively. The energy-absorbinglayers 44 and 54 can be made of plastic, polymer, foam, or othersuitable energy-absorbing material or impact liner to absorb, deflect,or otherwise manage energy and to contribute to energy management forprotecting a wearer during impacts. The energy-absorbing layers 44 and54 can include, without limitation, expanded polypropylene (EPP), EPS,expanded polyurethane (EPTU or EPU), expanded polyolefin (EPO), or othersuitable material. As indicated above, in-molded helmets can be formedwith the outer shell of the helmet being bonded directly to theenergy-absorbing layer by expanding foam into the outer shell. As such,the energy-absorbing layers 44 and 54 can, in some embodiments, bein-molded into outer shells 42 and 52, respectively, as singlemonolithic bodies of energy-absorbing material. Alternatively, in otherembodiments the energy-absorbing layers 44 and 54 can be formed ofmultiple portions or a plurality of portions. In any event, theenergy-absorbing layers 44 and 54 can absorb energy from an impact bybending, flexing, crushing, or cracking.

By forming the multi-body helmet 30 with multiple bodies or portions,such as upper-body 40 and lower-body 50, the multi-body helmet 30 canadvantageously and easily provide a multiple density design. Forexample, the upper-body 40 and the lower-body 50 can be formed ofenergy-absorbing materials of different densities and energy managementproperties, wherein the energy-absorbing material 44 can comprise afirst density, and the energy-absorbing material 54 can comprise asecond density different from the first density. The first density canbe greater than or less than the first density. In an embodiment, theenergy-absorbing material 44 can comprise a density in a range of 70-100g/L and the energy-absorbing material 54 can comprise a density in arange of 50-80 g/L. Additionally, multiple layers of varying density,including increasing density, decreasing density, or mixed density, canbe combined. By forming a single multi-body helmet 30 that comprises aplurality of densities for a plurality of bodies or components, helmetperformance including helmet weight, and testing performance, can bemanipulated and optimized with greater freedom and fewer restrictionsthan is available with a single bodied helmet.

By forming the multi-body helmet 30 with multiple interlocking bodies orportions, such as upper-body 40 and lower-body 50, the multi-body helmet30 can also provide increased design flexibility with respect toconventional one-body or monolithic protective helmets. Increased designflexibility can be achieved by forming the upper-body 40 and thelower-body 50 comprising shapes, geometric forms, and orientations thatwould be difficult to accomplish with a single body liner. Constraintsrestricting shapes, geometric forms, and orientations of a single bodyliner include constraints for injecting foam or energy-absorbingmaterial into a mold, constraints of removing the molded foam orenergy-absorbing material from the mold, and constraints of machining orremoving the single body liner from a template or standard blank ofmaterial such as a block of energy-absorbing material. For example, useof multiple interlocking body pieces for a single helmet can allow forhelmet shapes, geometric forms, and orientations that would be difficultor impossible to remove or pull from a 1-piece mold. As a non-limitingexample, increased design flexibility with respect to helmet shape forthe multi-body helmet 30 can include a helmet comprising a curvature orprofile that follows a contour of the occipital region or occipitalcurve of user's head. Furthermore, increased design flexibility forupper-body 40 and lower-body 50 can be achieved by simplifying thesimplify the assembly of energy-absorbing material for multi-body helmet30 at an EPS press.

FIG. 1 also shows a shield, lens, sunglasses, or visor 20 that can bereleasably coupled to the multi-body helmet 30. The shield 20 cancomprise a lens or lens portion 22 and a shield mount, rim, frame, orattachment portion 24 coupled to the lens 22. In some embodiments, thelens 22 and the shield mount 24 can be integrally formed of a singlematerial. In other embodiments, the lens 22 and the shield mount 24 canbe formed of two or more separate or discrete portions that can besubsequently coupled or attached to each other using any suitablechemical or mechanical attachment, including without limitation, anadhesive, permanent adhesive, fastener, clip, cleat, cutout, tab, snap,rivet, hog ring, or other interlocking surface, feature, or portion.

The lens 22 can comprise one, two, or any number of separate or discretesuitable members. In some instances a single large lens can cover botheyes of a user, while in other embodiments, a separate lens can be usedto separately cover each of the eyes of the user. However, for ease ofdescription, the lens 22 will be referred to in the singular, even whenmultiple lenses might be used. The lens 22 can comprise, glass, plastic,or other suitable material to shield or protect a user's eyes from wind,debris, and flying objects. The lens 22 can also be tinted or polarizedto reduce an amount of EM radiation arriving at the eyes of a helmetuser, including for example, bright visible light, reflections andglare, and harmful radiation such as UV rays. The lens 22 can also beconfigured to improve a user's eyesight by including one or moreprescription lenses, such as lenses used for correcting vision ineyeglasses. Furthermore, the lens 22 can also comprise a “heads-updisplay” for receiving and displaying desired information such ascomputer generated information or wirelessly transmitted information forviewing by the helmet user. When used as a heads-up display, an entiretyof the lens 22 or a portion of the lens 22 that is less than an entiretyof the lens 22 can be used for displaying desired information, for theuser to view, read, or use from the lens 22.

The shield 20 can be releasably coupled to the multi-body helmet 30using magnets, latches, clips, or other mechanical fasteners, eitheralone or together, which can allow the user to easily attach and removethe shield 20 to the multi-body helmet 30. In an embodiment, magnets ormagnetic components 26 can be used without additional mechanicalattachment to releasably couple the shield 20 to the multi-body helmet30. For ease of description and simplicity, the term or element “magnetsor magnetic components 26” will be referred to herein as “magnets 26.”However, a person of ordinary skill in the art will understand thatcoupling together two or more magnets 26 may include two magnets, suchas a first magnet 26 a ₁ and a second magnet 26 b ₁, which forconvenience may be referred to as helmet magnets. Additionally, couplingtogether two or more magnets 26 may also include coupling together amagnet or magnetized element 26 that comprises a magnetic field, as wellas a ferrous metal that reacts to a magnetic field, such as a firstmagnet 26 a ₁ and a ferrous metal 26 b ₁. In either event, the magnets26 will be magnetically coupled even when one of the magnets 26 is amagnetic or ferrous material that does not comprise its own magneticfield or does not attract other ferrous materials. As such, the shield20 can be easily coupled and uncoupled to the multi-body helmet 30 whenthe helmet user is either stopped or riding by the coupling of magnets26.

Conventional or traditional shields that have been configured to bereleasably coupled to a helmet have included cumbersome attachmentdevices that made attachment or releasing of the shield difficult,impractical, or impossible when the user was riding or on-the-go. Assuch, releasably coupling the shield 20 to the multi-body helmet 30 withmagnets 26 and without additional mechanical attachment can facilitateproper and secure positioning of the shield 20 with respect to a face oreyes of the user, which can be easily and conveniently accomplished bythe user even while riding. Similarly, releasably coupling the shield 20to the multi-body helmet 30 with magnets 26 and without additionalmechanical attachment can facilitate proper and secure positioning ofthe shield 20 on the helmet away from the eyes, such as for storage ofthe shield 20, which can be easily and conveniently accomplished by theuser even while riding.

FIG. 2 shows an exploded perspective view of the multi-body helmet 30,in which the upper-body 40 and the lower-body 50 of the multi-bodyhelmet 30 are vertically separated by a gap or space while being alignedwith respect to each other, such as before the upper-body 40 and thelower-body 50 are placed in contact with, or adjacent, one another. Fromthe separated position shown in FIG. 2, the upper-body 40 and lower-body50 can be drawn together into the adjacent positioning shown in FIG. 1.The upper-body 40 and lower-body 50 can also be coupled or adheredtogether using any suitable chemical or mechanical fastener, attachmentdevice, or substance including without limitation, an adhesive,permanent adhesive, PSA, foam-core adhesive, tape, two-sided tape,mounting foam adhesive, fastener, clip, cleat, cutout, tab, snap, rivet,hog ring, or hook and loop fasteners, or other interlocking surfaces,features, or portions. Such interlocking features can limit, prevent, orregulate undesired relative movement between the multiple bodies such asthe upper-body 40 and the lower-body 50. In some instances, apredetermined shear strength can be built into the interlocking featuresto shear or fail at predetermined levels of force. As a non-limitingexample, the multi-body helmet 30 can comprise bumps or pop-outs 80 aswell as indents 82 to assist in coupling together the upper-body 40 andthe lower-body 50 together to form the multi-body helmet 30. Morespecifically, FIG. 2 shows the bumps 80 and indents 82 can be formed onthe outer surface 58 of the lower-body 50 and be configured, by size,shape, and position, to be mateably coupled with corresponding bumps andindents on inner surface 46 of the upper-body 40. The interlockingfeatures of bumps 80 and indents 82 can help facilitate a strongerconnection and better alignment between the upper-body 40 and thelower-body 50 of the multi-body helmet 30.

FIG. 2 also shows that shield 20 can comprise a lens 22, as well as ashield mount 24 that can be attached or coupled to the lens 22. Theshield mount 24 can also comprise one or more attachment devices, suchas one or more magnets 26, for releasably coupling the shield 20 to themulti-body helmet 30. The magnets 26 can be of any desirable size,strength, or shape. While any number of magnets 26 can be used forreleasably coupling the shield 20 to the multi-body helmet 30, such asone, two, or three magnets, FIG. 2 shows a non-limiting example in whichthree or four magnets can be used. The magnets 26 shown in FIG. 2 areshown in dashed lines, indicating that the magnets 26 can be containedwithin the various structures of the multi-bodied helmet 30, or theshield 20, without being visible at a surface of the respectivestructures. For example, a first magnet 26 a (which for convenience maybe referred to as shield magnet) can be disposed on or within the shieldmount 24, and a corresponding second magnet 26 b, 26 c, or both, (whichfor convenience may be referred to as helmet magnets) can be disposedwithin the multi-body helmet 30. FIG. 2 shows a non-limiting example inwhich the magnet 26 b can be disposed within the lower-body 50 forreleasably coupling the magnet 26 a and the shield 20 to the lower-body50. Similarly, FIG. 2 also shows a non-limiting example in which themagnet 26 c can be disposed within the upper-body 40 for releasablycoupling the magnet 26 a and the shield 20 to the upper-body 50.

The magnets 26 disposed within the multi-bodied helmet 30, such asmagnets 26 b and 26 c, can be positioned so as to be releasably coupledto, and act as focus points for, the magnet 26 a disposed within theshield mount 24. A proximity or distance of between the magnet 26 a inthe shield mount 20 with the magnets 26 b or 26 c inside the lower-body50 and the upper-body 40, respectively, can cause the shield 20 and theshield mount 24 to self-locate or automatically align at a desiredposition on a brow portion 32 of the multi-body helmet 30. The desiredposition of magnets 26 b and 26 c on the brow portion 32 of the helmet30 can take into account a desired or preferred location or alignmentbetween a face or eyes of a user and the shield 20 or the lens 22. Thedesired position of the shield 20 on the brow portion 32 of the helmet30 can similarly take into account a desired or preferred offset ordistance between the face or the eyes of the user and the shield 20 orlens 22.

The desired position of the magnets 26 b and 26 c can be determinedbased on which position will best facilitate positioning the shield 20at a desirable or optimal position for the helmet user. The optimal ordesired position of the shield 20 can be along the thickness T of themulti-body helmet 30, as shown in FIG. 3. Placement of the magnets 25 band 26 c for coupling the shield 20 at the desired or optimal positioncan be made possible by positioning the magnets 26 b and 26 c within theupper-body 40 and lower-body 50 by using multiple in-molded shells, suchas outer shell 42 for upper-body 40 and the outer shell 52 for thelower-body 50, for positioning the magnets 26 within the multi-bodyhelmet 30. By integrating the attachment of the shield 20 within thethickness T of the multi-body helmet 30, the shield 20 need not bepositioned on an inner surface of the helmet, such as at the innersurface 57 of the lower-body 50, or at an outer surface of the helmet,such as at the outer surface 47 of the upper body 40. Furthermore, theshield 20 need not be attached to the multi-bodied helmet 30 with theuse of a complicated or cumbersome attachment device for adjusting aposition of the shield 20 from its natural position at the inner surfaceor outer surface of the helmet, to the desired position. Instead, theshield mount 24 can be a simple device that can be directly insertedinto the opening 66 or into a separation between the upper-body 40 andthe lower-body 50 at a brow portion 32 of the multi-body helmet 30.

Additional magnets 26, such as a third or fourth magnet 26 d can also beincluded as part of the multi-body helmet 30. A position of the fourthmagnet 26 d can facilitate convenient storage of the shield 20 in astorage position, such as when the rider chooses not to wear the shieldin a normal riding position, such as is shown in FIG. 6.

Advantages of positioning and locating the magnets 26 within themulti-body helmet 30 can be understood with respect to placement ofcomponents within conventional in-molded helmets. Conventional in-moldedhelmets, such as in-molded helmets comprising PC shells, areconventionally formed with the shells being in-molded on a face of atool wall or mold used for in-molding foam into the shell and the foammold. As such, components to be formed or in-molded within the foam,such as clips, anchors, magnets, lights, or other structures, are placedin direct contact with the outer shell to be held in place while anenergy-absorbing foam material, such as EPS or other suitable material,is in-molded within the shell. The components being in-molded within theshell are conventionally in direct contact with the outer shell toprevent the components from being displaced or moved by the foam orenergy-absorbing material being in-molded into the shell. As such,in-molded components disposed within the energy-absorbing material arelocated within the energy-absorbing material with at least a portion ofthe component in contact with, or adjacent, the shell. As such,convention single-body in-molded helmets have not included componentsbeing in-molded or placed in a center portion of the helmet, but havebeen limited by having the components disposed at a exterior portion ofthe energy-absorbing material adjacent the shell for the engineeringreasons disclosed above. Additionally, business considerations have alsolimited the placement of in-molded components at a center of anin-molded layer. For example, placing the components in theenergy-absorbing material after molding would make the placement of thecomponents, such as magnets 26, cumbersome, time-intensive, orcost-prohibitive, by requiring additional manufacturing steps to placecomponents within an already molded energy absorbing material.

To the contrary, bifurcation or use of multiple bodies as part of anin-molded helmet, such as formation of the multi-body helmet 30, canallow for greater possibilities with respect to placement of internalcomponents, such as magnets 26. Greater flexibility in componentplacement can be achieved because components coupled to a surface of ashell in an in-molded helmet can disposed at an inner portion of themulti-body helmet when the multiple bodies of the multi-body helmetcoupled together. For example, placement of a component, such as amagnet 26, in contact with the outer surface 58 of lower-body 50, or tothe inner surface 46 of the upper-body 40, can result in the componentor magnet 26 being disposed at an inner portion of the multi-body helmet30, when the upper-body 40 and the lower-body 50 are coupled together.By forming the components, such as magnets 26, within theenergy-absorbing layer as part of a conventional in-molding process, themagnets 26 can be disposed within a mold before the molding processbegins to efficiently and cost effectively provide the magnets at acenter portion of the helmet, within a central portion of the thicknessT of the multi-body helmet 30. In some embodiments, the central portionof the thickness T, such as where the magnets 26 are disposed, caninclude a portion of the thickness T that is offset from an inner orouter edge of the multi-body helmet 30, such as inner surface 57 of thelower-body 50 or the outer surface 47 of the upper-body 40 by a distancethat is greater than 1 millimeter (mm), 2 mm, 3 mm, 4 mm, 5 mm, 7 mm, 10mm or more.

Therefore, by including the in-molded components, such as magnets 26,within a conventional in-molding process for multiple bodies of amulti-body helmet, a number of advantages can be realized. First, themagnets 26 can be disposed within the energy-absorbing material duringthe in-molding process to avoid the inefficiencies present withinsertion of the magnets into an already in-molded helmet or helmetcomponent, such as by forming a void in the already molded energyabsorbing material, and subsequently adding the magnet 26 to the void,and filling a portion of the void not occupied by the magnet. Second,in-molding the magnets within multiple bodies of the multi-body helmet30, such as at the outer surface 58 of the lower-body 50, or the innersurface 46 of the upper-body 40, allows for the magnet 26 to be disposedwithin a central or inner portion of the multi-body helmet 30, away fromthe outer and inner surface of the multi-body helmet, such as the innersurface 57 of the lower-body 50 and the outer surface 47 of theupper-body 40.

As indicated above, and as shown in FIG. 3, the multi-body helmet 30 canfacilitate or allow for greater choice in the location or position ofthe shield 20 with respect to a thickness T of the multi-body helmet 30by increased flexibility in positioning magnets 26. Similarly, themulti-body helmet 30 can also facilitate or allow for greater choice inthe location or position of the shield 20 with respect to a position,size, or shape of an opening, space, gap, or void 66, which is discussedin greater detail below.

The opening 66 can be formed within the multi-body helmet 30 between theouter surface 58 of the lower-body 50 and the inner surface 46 of theupper-body 40. The opening 66 can also be formed such that the outerlimits, contours, or edges of the opening 66 can be formed, defined, ordelineated by portions of the outer surface 58 of the lower-body 50 andthe inner surface 46 of the upper-body 40 at a brow portion 32 of themulti-body helmet 30. The opening 66 can be sized and positioned withinthe multi-body helmet 30 to receive, or to be mateably coupled with, theshield mount 24 of the shield 20, which can be nested or concealedwithin the opening 66.

As such, at least a portion of the shield 20 and a portion of theopening 66 can be disposed or positioned near a center of the thicknessT of the multi-body helmet 30. Similarly, the shield 20 and the opening66 can also be disposed at any desirable position along the thickness Tof the multi-body helmet 30, depending upon the configuration, design,position, and relative orientation of the upper-body 40 and thelower-body 50. Thus, the intermediate position of the opening 66 and theshield mount 24 can be along a line that extends radially between acenter of the user's head to a point that is tangent with an outersurface of the helmet. Or, stated another way, the intermediate positionof the opening 66 and the shield mount 24 can be between the inner andouter surfaces of the multi-body helmet 30, such as the inner surface 57of the lower-body 50 and the outer surface 47 of the upper-body 40. Insome embodiments, the position or location of the opening 66 can beadapted or formed to suit a need or preference of an individual userusing the multi-body helmet 30. Adaption of the opening 66 to suit userpreference or need can include as distance or offset from the face ofthe user and the position of the shield 20 resulting from the positionof the opening 66. Adaption of the opening 66 to suit user preference orneed can also include another feature or dimension of the user, such asa size, shape, or position of the user's head within the helmet.

Taking into account one or more of the locations of the magnets 26within the multi-body helmet 30, as well as the size, position, or both,of the opening 66, an improved position of the magnetically coupledshield 20 can be provided for the multi-body helmet 30. The position ofshield 20 can be improved by increased the number and range of positionsat which the shield 20 can be magnetically coupled to the multi-bodyhelmet 30. For example, in addition to placing the shield 20 or theshield mount 24 at the inner or outer surface of the helmet, the shield20 or the shield mount 24 can also be placed at any of a plurality ofdistances along the thickness T of the multi-body helmet 30 toaccommodate a range of distances between the user's face or eyes. Theshield 20 or the shield mount 24 can also be placed so as to accommodateone or more of a size, shape, or position of the user's head or facewithin the multi-body helmet 30. The position of the shield 20 withrespect to the multi-body helmet 30 and the face, eyes, or both, of auser can be customizable and achieved with relative ease because of theflexibility in changing a shape or form of one or more bodies of themulti-body helmet 30, such as for the upper-body 40 and the lower-body50. As such, the position of the shield 20 can be determined byadjusting a size, shape, or position of the opening 66 by adjusting asize, shape, or position of the energy absorbing materials of themulti-body helmet 30, such as energy absorbing materials of theupper-body 40 and the lower-body 50. Stated another way, the position ofthe shield 20 does not need to rely on providing an intricate shieldmount assembly that comprises adjusters, extenders, clips, or otherstructures to allow for adjust a position of the shield 20 with respectto a position of the user's eyes and face. Instead, by shifting at leasta portion (and in some embodiments all) of the adjustment features forchanging a position between the user's eyes and the shield 20 away fromthe shield mount assembly and to the energy absorbing materials of themulti-body helmet 30, such as energy absorbing materials of theupper-body 40 and the lower-body 50, the function and aesthetic of thehelmet and shield is improved and simplified.

To the contrary, a conventional single-body helmet design, including anin-molded helmet design, will provide mounting surfaces for a shield onthe outer surface of the helmet or on the inner surface of the helmet.Thus, a position of the mounted shield for a conventional design couldnot be placed at a central area or thickness of the helmet during aconventional in-molding process, at a distance that is optimal ordesirable for a user, without adding mechanical complexity to the shieldmount part, or employing a different mounting method besides, or inaddition to, magnets.

The disadvantages of conventional designs, including those outlinedabove, are ameliorated with the multi-body helmet 30 and the shield 20disclosed herein. By nesting or disposing the shield mount 24 within theopening 66, the shield mount 24 and the shield 20 can be releasablycoupled to the multi-body helmet 30 with magnets 26 to automaticallyself-align the shield mount 24 within the opening 66. The self-alignmentcan occur by magnetic attraction between various magnets 26, such asbetween the magnet 26 a of the shield mount assembly and correspondingmagnets 26 b and 26 c embedded in the multi-body helmet 30. By using asimple shield mount 24 comprising the magnet 26 a, the shield 20 can besimply, easily, and releasably coupled to the multi-body helmet 30 asshown in FIG. 1. As a non-limiting example, surfaces of the magnets 26can be coplanar or substantially coplanar with each other by being incontact with each other or by being positioned at inner or outersurfaces of bodies of the multi-body helmet 30. For example, a surfaceof the magnet 26 a coupled to the shield mount 24 can be coupled to,coplanar to, or in direct contact with, a surface of the magnet 26 b, 26c, or 26 d. As another example, a thin layer of material, such as PCshell or other material on a portion of the multi-body helmet 30 can bedisposed between the closely aligned magnets 26 so that the magnets arenot in direct contact or coplanar with each other, but include surfacesthat are substantially coplanar with each other, being offset by thethickness of the thin layer of material. Furthermore, the design of theshield 20 and the multi-body helmet 30 comprising magnets 26 can provideflexibility and adaptability with respect to coupling the shield 20 tothe multi-body helmet 30 in multiple different positions. The multipleor plurality of positions available for mounting the shield to thehelmet can include a “rider” position shown in FIG. 4, a “visor”position shown in FIG. 5, and “storage” position shown in FIG. 6.

FIG. 4 illustrates a profile view of a front of the multi-body helmet 30with the shield 20 coupled in the rider position so that the lens 22 isaligned with the eyes of a user wearing the multi-body helmet 30. Therider position of the shield 20 can be achieved by inserting the shieldmount 24 within the opening 66. The rider position of the shield 20 canbe achieved easily and conveniently by the user because of theself-aligning magnetic coupling between the magnet 26 a of the shieldmount 24 and the magnet 26 b or 26 c disposed within the lower-body 50or the upper-body 40, respectively. As such, the user can couple theshield 20 to the multi-body helmet 30 while in motion, such as whileriding or cycling. The ability to attach the shield 20 to the multi-bodyhelmet 30 while in motion is in contrast to conventional helmetscomprising shield attachments that were difficult or cumbersome toattach, requiring the user to be stopped or have the helmet removed tocouple the shield to the helmet.

FIG. 5 illustrates a profile view of a front of the multi-body helmet 30similar to the view shown in FIG. 4. FIG. 5 differs from FIG. 4 in thatthe shield 20 is coupled in the visor position, rather than the riderposition, so that the lens 22 is not directly aligned with the eyes of auser wearing the multi-body helmet 30 but includes the shield 20elevated or raised up higher on the multi-body helmet 30. The visorposition of the shield 20 can be achieved by placing the shield mount 24outside of the opening 66 and in magnetic contact, or magneticallycoupled, to the magnet 26 d that is disposed above the magnets 26 b and26 c. The visor position of the shield 20, like the rider position ofthe shield 20, can be achieved easily and conveniently by the userbecause of the self-aligning magnetic coupling. As such, the user cancouple the shield 20 to the multi-body helmet 30 in the visor positionwhile in motion, such as while riding or cycling. As a non-limitingexample, a user may desire to switch from the rider position to thevisor position during a ride or race, and can do so without stopping hiscycle or removing the multi-bodied helmet 30. The ability to attach theshield 20 to the multi-body helmet 30 while in motion is in contrast toconventional helmets comprising shield attachments that were difficultor cumbersome to attach, requiring the user to be stopped or have thehelmet removed to couple the shield to the helmet.

FIG. 6 illustrates a profile view of a front of the multi-body helmet 30similar to the views shown in FIGS. 4 and 5. FIG. 6 differs from FIGS. 4and 5 in that the shield 20 is coupled in the storage position, ratherthan the rider or visor position, so that the lens 22 is not alignedwith the eyes of a user wearing the multi-body helmet 30, but is insteadstored away from the user's eyes and face in an elevated or raisedposition higher up on the multi-body helmet 30. The storage position ofthe shield 20 can be achieved by placing the shield mount 24 outside ofthe opening 66 and in magnetic contact, or magnetically coupled, to themagnet 26d with the shield in an inverted or upside-down position. Thestorage position, like the visor position and the rider position of theshield 20, can be achieved easily and conveniently by the user becauseof the self-aligning magnetic coupling of magnets 26. As such, the usercan couple the shield 20 to the multi-body helmet 30 in the storageposition while in motion, such as while riding or cycling. As anon-limiting example, a user may desire to switch from the riderposition or the visor position to the storage position during a ride orrace, and can do so without stopping his cycle or removing themulti-bodied helmet 30. The ability to attach the shield 20 to themulti-body helmet 30 while in motion is in contrast to conventionalhelmets comprising shield attachments that were difficult or cumbersometo attach, requiring the user to be stopped or have the helmet removedto couple the shield to the helmet. By placing the shield 20 in thestorage position, the shield is not visible to the user and does notinterfere with a users sight, while at the same time remaining readilyaccessible and in a position to be easily placed back in a rider orvisor position when desired. Furthermore, with the shield in the storageposition, the shield is safe from being lost, damaged, or falling.

FIG. 7 shows another non-limiting example of an exploded perspectiveview of an aspect of the multi-body helmet 30, similar to the view shownin FIG. 2. More specifically, FIG. 7 illustrates an instance in whichthe “any number” of magnets 26 used for releasably coupling the shield20 to the multi-body helmet 30 can include one or more magnets 26, whichmay comprise one magnet, two magnets, three magnets, or any suitablenumber of magnets 26, at each of one or more desired locations. Thedesired locations for magnets 26 may comprise one or more magnets 26 adisposed on or within the shield mount 24 (which for convenience may bereferred to as shield magnets), one or more magnets 26 b disposed on, orencased or in-molded within, the lower-body 50, one or more magnets 26 cdisposed on, or encased or in-molded within, the upper-body 40, and oneor more magnets 26 d disposed on, or encased or in-molded within, anupper portion of the upper-body 40 (wherein magnets 26 b, magnets 26 c,and magnets 26 c, for convenience, may be referred to as helmetmagnets).

More specifically, and as a non-limiting example, magnets 26 a are shownas a first magnet 26 a ₁ in a first portion of shield mount 24 and asecond magnet 26 a ₂ in a second portion of shield mount 24. Magnets 26a can comprise a spacing or offset in a range of 0.3-20 centimeters (cm)to, 0.5-15 cm, or about or substantially 1 cm, 2 cm, 3 cm, 4 cm, 5 cm, 6cm, 7 cm, or more, wherein about or substantially means within 0.5 cm.In some instances, the spacing between various magnets 24 may beconstant or vary. For example, a first spacing, offset, or distancebetween the first magnet 26 a ₁ and the second magnet 26 a ₂ may be afirst distance, such as about 1-2 cm, and a second spacing, offset, ordistance between the second magnet 26 a ₂ and a third magnet 26 a ₃ maybe different or greater than the first distance, such as in a range of1-10 cm, 2-7 cm, or 3-5 cm, such as when the third magnet 26 a ₃ islocated or positioned near a temple area 36 of the helmet 30, such asalong the brow area 34 along the front lower edge of the helmet abovewhere the shield 20 is positioned.

Magnets 26 b are shown as a first magnet 26 b ₁ disposed on, or encasedor in-molded within, the lower body 50, and a second magnet 26 b ₂disposed on, or encased or in-molded within, the lower body 50. The oneor more magnets 26 b may comprise a spacing or offset that correspondsto a spacing or offset between the one or more magnets 26 b, such as thefirst magnet 26 a _(i) and the second magnet 26 a ₂. The spacing oroffset between the one or more magnet 26 a and the spacing or offsetbetween the one or more magnets 26 b will be understood to correspond orbe similar when the spacing or offset allows for a strong or desirablereleasable connection between the magnets 26 a and the magnets 26 b,such as when the one or magnets 26 a are within 1 cm or less from thecorresponding or respective one or more magnets 26 b. By including aspace or offset between the one or more magnets 26, such as between theone or more magnets 26 a and the one or more magnets 26 b, thehorizontal spacing and multiple points of contact between the shield 20and the helmet 30 can reduce, minimize, or eliminate undesired twistingor relative movement between the shield 20 and the helmet 30, such aswhen wind or airflow from riding contacts the shield 20 and the helmet30. Improved stability and reduction or elimination of relative movementbetween the shield 20 and the helmet 30 may result from one or more ofmultiple points of contact among magnets 26, increased magneticattraction, and an increased moment of inertia resulting from the shape,position, or both, of the magnets 26.

In any event, the magnets 26 (including 26 a, 26 b, 26 c, and 26 d) maycomprise any desirable size or shape, including a geometric shape suchas square, rectangle, or other polygon, as well as any organic form,including circular, oval, or other suitable shape. In some instances,the magnetic coupling of the shield 20 and the helmet 30 may comprisemagnets 26 spaced or offset to comprise an additional horizontal lengthor spacing as shown or described with respect to magnets 26 a and 26 b.In other instances, a horizontal space or offset between opposing sidesor ends of the one or more magnets 26, like magnet 26 c, can be filledwith a magnet to be a single continuous, oblong, or elongated magnet 26,as illustrated by the rectangular magnet 26 c in FIG. 7. As such, aperson of ordinary skill in the art will understand that any of themagnets 26 can include elongated shapes or shapes with a horizontalelement greater than 0.5 cm, as shown by magnet 26 c. Similarly, any ofthe magnets 26 can include more than one magnet with a horizontalspacing or offset as shown by magnets 26 a and 26 b.

As a non-limiting example, the helmet 30 may comprise six magnets 26, orthree sets of magnet pairs (the magnet pairs comprising at least twomagnets), wherein each magnet pair comprises offset magnets. The threepairs can be for the shield 20, an active or riding position on thehelmet 30, and a passive or storage position on the helmet 30. The threesets of magnet pairs may be in each of the first, second, and thirdlocations. See, e.g. 26 a, 26 b or 26 c, and 26 d as shown in FIG. 7.Alternatively, one or more elongated magnets 26 may take the place ofone or more magnet pairs by extending in a horizontal direction, such asfor a distance greater than or equal to 0.5 cm, 1 cm, or 2 cm.

As another non-limiting example, the helmet 30 may comprise four magnets26, or two sets of magnet pairs (the magnet pairs comprising at leasttwo magnets), wherein each magnet pair may comprise offset magnets. Thetwo sets of magnet pairs may be in first and second locations. See, e.g.26 a, and 26 b or 26 c, as shown in FIG. 7. Alternatively, one or moreelongated magnets 26 may take the place of one or more magnet pairs byextending in a horizontal direction, such as for a distance greater thanor equal to 0.5 cm, 1 cm, or 2 cm.

In some instances, the shield mount 24 may be formed as a single memberor element (see e.g., FIG. 2) or with more than one shield mount 24 (seee.g. FIG. 7). In some instances, the shield mount 24 can extend to anedge or distal end 23 of lens 22, or comprise a portion of the shieldmount 24 at the edge or distal end 23 of the lens 22. In any event, oneor more of a spacing, position, or size of the magnets 26 may helpprevent undesired twisting or relative movement between the shield 20and the helmet 30. In some instances, one or more magnets 26 may bereplaced with other structural features to prevent the undesiredtwisting or undesired movement, while still facilitating or providingfor easy and improved magnetic coupling between the shield 24 and thehelmet 30.

As such, the multi-body helmet 30 comprising the magnetically mountedshield 20 can provide a number of advantages for cyclists or otherhelmet users. Advantages of the multi-body helmet 30 and shield 20 cancomprise: (i) magnets 26 disposed within the multi-body helmet 30 to actas focus points or for self-alignment of the shield 20; (ii) the magnetscan be disposed within energy-absorbing material of the multi-bodyhelmet 30 during formation, such as during an in-molding process; (iii)the shield mount 24 can be coupled to a portion of the thickness of themulti-body helmet 30 away from an inner surface or exterior surface ofthe multi-body helmet 30; (iv) multiple densities of energy absorbingmaterial, such as a first density in the upper-body 40 and a seconddensity in the lower-body 50 can be easily accommodated do to themulti-body design; and (v) a helmet shape design and geometry caninclude a greater number of possibilities due to additional possiblepull angles with various bodies of the multi-body design.

Accordingly, where the above examples, embodiments, and implementationsreference examples, it should be understood by those of ordinary skillin the art that other helmet and manufacturing devices and examplescould be intermixed or substituted with those provided. In places wherethe description above refers to particular embodiments of helmets andcustomization methods, it should be readily apparent that a number ofmodifications may be made without departing from the spirit thereof andthat these embodiments and implementations may be applied to other tohelmet customization technologies as well. Accordingly, the disclosedsubject matter is intended to embrace all such alterations,modifications and variations that fall within the spirit and scope ofthe disclosure and the knowledge of one of ordinary skill in the art.

1.-20. (canceled)
 21. A helmet comprising: an upper-body comprising anouter shell; a lower-body comprising an energy absorbing layer nestedwithin the upper body; an opening formed within a front portion of thehelmet; at least one first magnet encased within the upper-body or thelower-body and adjacent the opening; and a shield comprising a shieldmount and at least one second magnet coupled to the shield mount that issized to fit within the opening and to be releasably magneticallycoupled to the at least one first magnet.
 22. The helmet of claim 21,wherein the at least one first magnet comprises a surface that issubstantially coplanar with a surface of the opening.
 23. The helmet ofclaim 21, wherein the at least one first magnet and the at least onesecond magnet are self-aligned with respect to each other such that theshield magnetically couples within the opening in direct alignment witheyes of a user to prevent twisting of the shield while magneticallycoupled to the at least one first magnet.
 24. The helmet of claim 21,wherein: the at least one first magnet comprises: a first helmet magnetencased within the upper-body or the lower-body, and a second helmetmagnet encased within the upper-body and horizontally offset from thefirst helmet magnet when the first helmet magnet is encased within theupper body, and the second helmet magnet encased within the lower-bodyand horizontally offset from the first helmet magnet when the firsthelmet magnet is encased within the upper body; and the at least onesecond magnet comprises: a first shield magnet coupled to the shieldmount, and a second shield magnet coupled to the shield mount andhorizontally offset from the first shield magnet.
 25. The helmet ofclaim 21, further comprising a third magnet mounted to the upper bodyabove the opening for magnetic coupling with the second magnet.
 26. Thehelmet of claim 21, wherein: the at least one first magnet comprises ahorizontally elongate shape; and the at least one second magnetcomprises a horizontally elongate shape corresponding to the at leastone first magnet to prevent twisting of the shield.
 27. The helmet ofclaim 21, wherein the upper body comprises polycarbonate (PC),polyethylene terephthalate (PET), acrylonitrile butadiene styrene (ABS),polyethylene (PE), polyvinyl chloride (PVC), vinyl nitrile (VN),fiberglass, or carbon fiber.
 28. The helmet of claim 21, wherein thelower body comprises expanded polypropylene (EPP), expanded polystyrene(EPS), expanded polyurethane (EPTU or EPU), or expanded polyolefin(EPO).
 29. The helmet of claim 21, wherein the upper body and lower bodyare coupled together.
 30. The helmet of claim 21, wherein the shieldcomprises a lens portion.